Manufacture of pipes.



C. M. WALES & C. BASKERVILLE.

MANUFACTURE OF PIPES.

APPLICATION FILED rams. IQIG.

Patented Oct. 8, 1918.

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CHARLES M. WALES AND CHARLES BASKERVILLE, OF NEW YORK, N. Y., ASSIGNORSTO THE METALCO COMPANY, OF MOUNT VERNON, NEW YORK, A CORPORATION OFCONNECTICUT.

MANUFACTURE OF PIPES.

Application filed February 5, 1916.

To all whom it may concern Be it known that we, CHARLES M. WALES andCHARLES BASKERVILLE, citizens of the United States, and residents of theborough of Manhattan, city of New York, county and State of New York,have made certain new and useful'Improvements in the Manufacture ofPipes, of which the following is a specification.

The object of the invention is to produce a pipe having a lead or a leadalloy coating which is secured to a ferrous reinforcing member that ispreferably in the form of a gauze, netting or perforated sheet. Such apipe is useful'where it is desired to have strength and at the same timea lead or lead alloy coating whereby the pipe will not be subject toattack by many acids.

As illustrating certain manners in which the invention may be realizedreference is made to the drawing forminga part of this specification andin which drawing,

Figure 1 shows in perspective one form of blank which may be employed inmaking a pipe.

Fig. 2 shows the same blank when bent into circular form prior to theoverlapping ends being united so as to complete the pipe.

Fig. 3 is a perspective view of the fin shed pipe made from the blank'shown in Fig, 1.

Fig. 4 is a perspective view of another form of blank which may beemployed in the making of a lead pipe having a ferrous reinforcingmember.

Fig. 5 is an end view of the blank after the same has been bent intosubstantially circular form.

Fig. 6 is a perspective view of the pipe made by the employment of theblank shown in Fig.

Figs. 7 and 8 are, respectively, end and side views of a reinforcingmember which may be employed in the manufacture of a lead pipe.

Fig. 9 is a perspective view of a pipe which is made by dipping theblank shown in Figs. 7 and 8 in hot lead after said blank has beenproperly treated.

According to the present invention a ferrous reinforcing member, whichis preferably in the form of a wire gauze, netting or perforated sheet,of either 1ron or steel, 1s properly cleaned as by pickling in anysuitable acid in any well known manner. en

cleaned it is preferably dipped in a zinc Specification of LettersPatent Patented Oct. 8, 1918.

Serial N 0. 76,330.

chlorid or antimony chlorid solution. The function of this solution isto serve as a flux to maintain the ferrous reinforcing member in a cleancondition. The reinforcin member which is, as previously indicatepreferably in the form of gauze or the like, is then dipped into amolten antimony lead alloy. The .alloy will hereinafter be referred toas the alloy of binding material. This binding alloy containsapproximately from 10 to 13% of antimony and is preferably covered witha suitable flux when in a molten condition. When the reinforcing memberis thus dipped it acquires a coating of the binding material and it isnow ready for the reception of the main covering or coating materialwhich is to provide the exterior of the final article.

This main covering is a chemically pure lead or an alloy containinglead. This additional lead or lead alloy which provides the coating orcovering may be applied to the gauze which has been dipped into thebinding alloy or to which the binding alloy has otherwise been appliedas by pressing the treated gauze or the like into a thin layer of moltenlead or lead alloy some of which molten lead or alloy is allowed tosolidify and remain on the treated gauze. This dipping operation intothe molten lead or lead alloy may be continued until the requiredstructure has been built up or the additional lead may be secured to thereinforcing member of gauze or the like as by placing the gauze betweensheets of lead or sheets of lead alloy and passing the same betweenheated rollers; or the additional lead or lead alloy may be applied tothe gauze or the like by feeding the gauze between two troughs containing molten lead or lead alloy and which troughs are constructed soas to feed out layers of molten metal against the gauze whereby themolten metal thus fed will solidify and adhere to the gauze.

According to the present invention a gauze or wire netting as shown inFig. 1 is treated in any suitable manner as above described and a bodyof lead is applied to opposite sides thereof so as to form two sheets Band C, so to speak, of lead that are connected to each other and also tothe ferrous metal in the reinforcing member A through the medium of thebinder comprising an alloy of antimony and lead. The reinforcing membershown in Fig. 1 is made as by weaving the wires D and E, part of whichwires extend circumferentially ofthe pipe when the pipe is completedand-the rest of which wires preferably extend along the 1 e. p lfn Fi 4the reinforcing member is designated y A and the sheets of lead whichare secured thereto on opposite sides thereof are designated by B and C.The reinforcing member A shown in this figure is a gauze or netting inthe form of a perforated metal sheet.

The blank shown in Fig. 1 has been left with ends F and G which overlapeach other when the blank is bent as shown in Fig. 2. When the ends haveassumed the position shown in Fig. 2 heat and pressure are appliedwhereby the lead in the laps and body portion of the pipe will unite.andwhereby there will be formed an intimate union of .lead with theoverlapping portions 7 and g of the reinforcing member thus resulting inapipe such as shown in Fig. 3.

It will be manifest from what has preceded that a blank, such as isillustrated in "Fig. 4:, can be readily made so as to comprise a ferrousreinforcing member having lead or an alloy of lead, in substantiallysheet form, secured to and located on opposite sides of said ferrousreinforcing member. This blankcan be bent so as to assume the circularor tubular form shown in' Fi 5 with the portions f and g of the reinorc-' ing member overlapping. These overlapping portions may have asmall amount of lead or lead alloy upon them besides the binding alloyor may merely be left with only some binding material thereupon wherebywhen lead is cast or otherwise placed into the space between the lines00-00 and y-y a product will result in which a lead outer coating and alead lining coating respectively on the exterior and interior of thepipe will be continuous and whereby the lead thus cast or positioned inplace will be firmly united to the overlapping ends of the reinforcingmember and will also serve to firmly unite said overlapping ends.

In Figs. 7 to 9 inclusive there is illustrated another manner of makinga reinforcing pipe and' this comprises the bending ofa reinforcingmember into the circular or tubular form shown in Figs. 7 and 8 afterwhich it is properly treated and supplied with the lead antimony binder.This reinaaeaeoo tween the lead or lead alloy coating and the ferrousreinforcing metal and thus the ferrous metal will be adequatelyprotected so that it can continue to perform its function and will notbe subjected to deleterious attacks in places where pipes of the kindherein described are liable to be used.

What we claim is:

1. A pipe of the class described comprising in combination a ferrousreinforcing member to which there is secured a continuous .sheet of leadby means of a binder compris ing an alloy of antimony and lead.

2. A pipe of the class described comprising in combination a wire gauzeor the like of ferrous metal to which there is secured a continuoussheet of lead by means of a binder comprising an alloy of antimony andlead.

3. A pipe having an exposed surface of chemically pure lead which isreinforced by means of a ferrous wire gauze or the like, there being alead antimony binder between said chemically pure lead surface and thewire gauze.

4. A pipe having a lead or lead alloy coat ing and a ferrous reinforcingmember which is bent into circular or tubular form so that the endsthereof overlap, said lead or leadv alloy coating being secured to saidreinforcing member by means of a suitable binder.

5. A pipe having a lead or lead alloy coating and a ferrous reinforcinggauze bent into circular form so that the ends thereof overlap, saidlead or lead alloy coating being secured to said reinforcing gauzethrough the medium of a lead antimony binder.

This specification signed and witnessed this 4th day of February A. D.,1916.

. CHARLES M. WALES.

CHARLES BASKERVILLE. Signed in the presence of- G. MCGRANN, EDWIN A.PACKARD.

